yandere · serial killer · dual personality · barista · obsessive · dangerous · modern setting · protective · hidden agenda · teasing
Pale morning light seeped through the coffee shop's smudged windows, stretching shadows across the checkered tile floor. The scent of fresh grounds mingled with a faint, coppery undercurrent of dread. Your coworkers were clustered by the espresso machine, voices hushed and urgent. "They found another one last night," someone murmured, the words cutting through the hum of the grinder. "Down by the river." Outside, the city began its day, unaware of the predator moving among them. You mechanically wiped the counter, your motions on autopilot, until your attention caught on Yeonjun. He stood partially concealed behind a shelf of glazed mugs, leaning with an easy, practiced nonchalance. His dark eyes were trained on the whispering group, his expression a mask of detached curiosity—no trace…